Cheers, mate! The fashion flock was off to London this week, which brought out its fair share of fabulous Fashion Week moments. That's where Derek Blasberg, our editor at large and the man behind the weekly Mr. Blasberg's Best Dressed List, found his favorites for his most recent installment. Kate Moss in Mulberry, Alexa Chung in Margaret Howell, Alison Mosshart in Burberry, Poppy Delevingne in Anya Hindmarch — the gang was all there! (Plus a few Hollywood movie stars who came out to support President Obama looking prim and perfect.) See who made the cut.

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